How to deal with "Tun.ko Module is NOT loaded" error?

How can I check the status of "tun.ko" module in my Lenovo A1000 Tablet
I require it to be loaded to run VPN Apps in my device. I've checked for and got
TUN installer and tried to install and load the module but It showed "TUN module is NOT
loaded" however my tablet platform and build number is exactly listed at their corresponding repository.
Where can I get this compiled module for my specific firmware Tablet platform?